Fetal doppler question

I know I can’t technically hear anything yet but I’m a new mommy and I’m just so excited I been trying every few days(only 5/7 mins) I’m only 10 weeks but all I hear is really loud wind sounds and my heart beat faintly. Is the baby heartbeat just muffled out by the wind sounds how could I find it easier ? And what are those wind sounds? I’ve read it’s something to do with placenta but not sure. My app with mid wife ain’t until next week (and I’m not worried something happened I knew already I wouldn’t hear it only on a Lucky chance)